Friction-clutch.



PATENTED JAN'. 1'7,' 1905.

J F; DURYEA. FRICTION CLUTCH. nrmouio n FILED mun. 27. 1900. RENEWED MAY12, 1904.

Ur'yea,

Frankl) Inventory Witnesses;

invention.

UNITED STAT S Patented January 17, 1905.

PATENT OFFICE.

FRICTION-CLUTCH.

SPECIFICATION forming part of Letters Patent No. 780,482, dated January17, 1905.

Application filed March 27, 19,00. Renewed May I2, 1904;. Serial No.207,694. 7

To all whom it may concern:

Be it known that I, JAMES FRANK DURYEA, a

citizen of the United States of America, and a resident of'Springfield,county of Hampden, State of Massachusetts, have invented certain new anduseful Improvements in Friction- Clutches, of which the following is aspecification..

The clutch is of the type inwhich the engagement of the two members isbetween shoes carried by one member and thrust radially outward againsta cyliudrically-bored surface of the other member. v

The invention has for its object economy of space lengthwise on theshaft and improvement in the construction of the parts whereby they maybe more conveniently assembled and adjusted than according to presentpractice.

Inthe accompanying sheet of drawings, which forms a part of thisspecification, Figure 1 shows two like friction-clutches, partly insection, constructedin accordance with this Fig. 2 shows. a front viewof one of the clutches. Fig. 3 shows a sectionthrough the line'sa m ofFig. 1, only the member carrying the shoes being shown.

Two clutches are shown operatedby a single lever. -One clutch is shownas. used to connect a gear 1 and the other as used to connect asprocket-wheel 2 with the shaft on which the'clutches are mounted. Theclutch member 3, which is connected with a sprocket wheel or gear, has acylindrically-bored-rim 4:. Within the rim is a plate 5, having a hub 6,which is keyed to the shaft. At the ends of this plate are the shoes 7,the outer faces of which are covered. preferably, with leather 8 andcurved to fit the rim. Studs 9 in the shoes pass through holes in theplate, and springs 10 around the studs draw the shoes away from the rim.The shoes are pressed outwardly against the rim to apply the clutch bymeans of toggles. Each toggle is a bolt 11 with a ball-shaped head 12,which is screwed in a forked member 13. The length of the toggle isadjusted by turning the bolt. On each bolt is a toothed flange 14:,which is engaged by the end of the spring 15. This spring is Set, in agroove in the forked memberof the toggle. It locks the bolt againstaccidental displacement after it has been adjusted. The ball-shapedheads of the bolts set in sockets 16 in the shoes. Between the forkedends of the togglesis an equalizing-plate 17. This plate is mounted onthe flanged sliding sleeve 18.

shown as screwed together at their connecting edges. The flanges 19 ofthe sleeve 18 guide the parallel faces of the equalizing-plate 17. Theopeningin this plate through which the sleevepasses is larger than thebody of the sleeve. The plate is therefore transversely movable withrespect to the sliding sleeve, but is guided by the flanges and iscarried longitudinally with the sleeve when the latter is slid on theshaft. For convenience in assembling the equalizing-plate is in twoparts, held together by the forked ends of the toggles and thehinge-pins 20. Each pin passes through both parts of the plate and theforked ends of one of the toggles.

Encircling the sliding sleeve is a collar 21 with a ball-bearing joint22 between it and the sleeve. The joint connects the collar and thesleeve so that the sleeve can be slid longitu- The two sleeves, one ofwhich is illustrated in section and the other in elevation, are

dinally by the collar and the collar will not revolve with the sleeve. Aflange on the collar is engaged bypins 23 on the ends of a forked lever24, which is operated to apply the clutch.

The drawings show two clutches operated by the same forked lever. Eachclutch has all of the elements enumerated excepting the lever, collar,and ball-bearing for the collar, which are common to the two clutches.The sleeves for the twoclutches are screwed together, and theball-bearing is at the meetingpoint. Operation of the forked lever inone direction applies one of the clutches and in the other directionapplies the other clutch.

What I claim as new, and desire to secure by Letters Patent of theUnited States, is

1. In a friction-clutch, the combination of two engaging members, one ofthe members having a cylindrically-bored rim, and the other memberconsistingof a plate with radiallymovable friction-shoes mountedthereon, a

flanged sliding sleeve, an equalizing-plate mounted on the sleeve andbetween the flanges thereon and transversely movable in respect to thesleeve, toggles between the equalizingplate and shoe, and means forapplying the clutch through the sliding sleeve, substantially asdescribed.

Signed by me in New York, borough of Wanhattan, this 26th day of March,1900.

' J. FRANK DURYEA. \Vitnesses:

THOMAS EWING, Jr., SAMUEL W. BALGl-L

